java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:38:10,145 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:38:10,147 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:38:10,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:38:10,159 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:38:10,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:38:10,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:38:10,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:38:10,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:38:10,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:38:10,167 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:38:10,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:38:10,168 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:38:10,169 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:38:10,170 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:38:10,171 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:38:10,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:38:10,177 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:38:10,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:38:10,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:38:10,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:38:10,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:38:10,183 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:38:10,183 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:38:10,184 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:38:10,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:38:10,186 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:38:10,187 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:38:10,188 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:38:10,188 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:38:10,189 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:38:10,189 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:38:10,190 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:38:10,190 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:38:10,191 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:38:10,191 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:38:10,203 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:38:10,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:38:10,204 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:38:10,204 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:38:10,205 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:38:10,206 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:38:10,206 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:38:10,206 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:38:10,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:38:10,207 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:38:10,207 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:38:10,207 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:38:10,207 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:38:10,207 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:38:10,208 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:38:10,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:38:10,208 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:38:10,209 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:38:10,209 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:38:10,244 INFO ]: Repository-Root is: /tmp [2018-06-22 01:38:10,261 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:38:10,264 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:38:10,265 INFO ]: Initializing SmtParser... [2018-06-22 01:38:10,266 INFO ]: SmtParser initialized [2018-06-22 01:38:10,267 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 [2018-06-22 01:38:10,268 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 01:38:10,357 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 unknown [2018-06-22 01:38:10,521 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 [2018-06-22 01:38:10,526 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:38:10,533 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:38:10,533 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:38:10,534 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:38:10,534 INFO ]: ChcToBoogie initialized [2018-06-22 01:38:10,537 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,595 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10 Unit [2018-06-22 01:38:10,595 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:38:10,596 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:38:10,596 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:38:10,596 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:38:10,616 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,617 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,622 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,622 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,624 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,626 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,627 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... [2018-06-22 01:38:10,628 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:38:10,629 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:38:10,629 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:38:10,629 INFO ]: RCFGBuilder initialized [2018-06-22 01:38:10,630 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:38:10,642 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:38:10,642 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:38:10,642 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:38:10,642 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:38:10,642 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:38:10,642 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:38:10,808 INFO ]: Using library mode [2018-06-22 01:38:10,809 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:38:10 BoogieIcfgContainer [2018-06-22 01:38:10,809 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:38:10,810 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:38:10,810 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:38:10,813 INFO ]: TraceAbstraction initialized [2018-06-22 01:38:10,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:38:10" (1/3) ... [2018-06-22 01:38:10,814 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283b4b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:38:10, skipping insertion in model container [2018-06-22 01:38:10,814 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:10" (2/3) ... [2018-06-22 01:38:10,815 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283b4b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:38:10, skipping insertion in model container [2018-06-22 01:38:10,815 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:38:10" (3/3) ... [2018-06-22 01:38:10,817 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:38:10,826 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:38:10,836 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:38:10,872 INFO ]: Using default assertion order modulation [2018-06-22 01:38:10,873 INFO ]: Interprodecural is true [2018-06-22 01:38:10,873 INFO ]: Hoare is false [2018-06-22 01:38:10,873 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:38:10,873 INFO ]: Backedges is TWOTRACK [2018-06-22 01:38:10,873 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:38:10,873 INFO ]: Difference is false [2018-06-22 01:38:10,873 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:38:10,873 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:38:10,888 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 01:38:10,899 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:38:10,899 INFO ]: Found error trace [2018-06-22 01:38:10,900 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:10,900 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:10,905 INFO ]: Analyzing trace with hash -1550845179, now seen corresponding path program 1 times [2018-06-22 01:38:10,906 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:10,907 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:10,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:10,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:10,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:10,977 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:11,145 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:38:11,147 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:11,148 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:38:11,150 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:11,166 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:11,166 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:11,170 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 01:38:11,352 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:11,352 INFO ]: Finished difference Result 19 states and 25 transitions. [2018-06-22 01:38:11,352 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:11,353 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-22 01:38:11,354 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:11,361 INFO ]: With dead ends: 19 [2018-06-22 01:38:11,361 INFO ]: Without dead ends: 19 [2018-06-22 01:38:11,363 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:38:11,380 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 01:38:11,406 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 01:38:11,407 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 01:38:11,408 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-06-22 01:38:11,409 INFO ]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 7 [2018-06-22 01:38:11,410 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:11,410 INFO ]: Abstraction has 19 states and 25 transitions. [2018-06-22 01:38:11,410 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:11,410 INFO ]: Start isEmpty. Operand 19 states and 25 transitions. [2018-06-22 01:38:11,411 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 01:38:11,412 INFO ]: Found error trace [2018-06-22 01:38:11,412 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:11,412 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:11,412 INFO ]: Analyzing trace with hash 773350225, now seen corresponding path program 1 times [2018-06-22 01:38:11,412 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:11,412 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:11,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:11,413 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:11,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:11,435 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:11,519 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:38:11,519 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:11,519 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:38:11,521 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:38:11,521 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:38:11,521 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:38:11,521 INFO ]: Start difference. First operand 19 states and 25 transitions. Second operand 5 states. [2018-06-22 01:38:11,645 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:11,645 INFO ]: Finished difference Result 24 states and 32 transitions. [2018-06-22 01:38:11,646 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:11,647 INFO ]: Start accepts. Automaton has 5 states. Word has length 15 [2018-06-22 01:38:11,647 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:11,649 INFO ]: With dead ends: 24 [2018-06-22 01:38:11,649 INFO ]: Without dead ends: 22 [2018-06-22 01:38:11,650 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:38:11,650 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 01:38:11,657 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-06-22 01:38:11,657 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 01:38:11,658 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2018-06-22 01:38:11,658 INFO ]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 15 [2018-06-22 01:38:11,658 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:11,658 INFO ]: Abstraction has 20 states and 27 transitions. [2018-06-22 01:38:11,658 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:38:11,658 INFO ]: Start isEmpty. Operand 20 states and 27 transitions. [2018-06-22 01:38:11,659 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 01:38:11,659 INFO ]: Found error trace [2018-06-22 01:38:11,659 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:11,659 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:11,659 INFO ]: Analyzing trace with hash 897467308, now seen corresponding path program 1 times [2018-06-22 01:38:11,659 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:11,659 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:11,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:11,661 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:11,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:11,679 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:11,771 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:38:11,771 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:11,771 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:38:11,772 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:11,772 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:11,772 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:11,775 INFO ]: Start difference. First operand 20 states and 27 transitions. Second operand 4 states. [2018-06-22 01:38:11,856 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:11,856 INFO ]: Finished difference Result 23 states and 31 transitions. [2018-06-22 01:38:11,857 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:38:11,857 INFO ]: Start accepts. Automaton has 4 states. Word has length 15 [2018-06-22 01:38:11,857 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:11,858 INFO ]: With dead ends: 23 [2018-06-22 01:38:11,858 INFO ]: Without dead ends: 23 [2018-06-22 01:38:11,858 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:11,858 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 01:38:11,862 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-06-22 01:38:11,862 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 01:38:11,863 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-06-22 01:38:11,863 INFO ]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 15 [2018-06-22 01:38:11,864 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:11,864 INFO ]: Abstraction has 21 states and 28 transitions. [2018-06-22 01:38:11,864 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:11,864 INFO ]: Start isEmpty. Operand 21 states and 28 transitions. [2018-06-22 01:38:11,864 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 01:38:11,864 INFO ]: Found error trace [2018-06-22 01:38:11,864 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:11,864 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:11,865 INFO ]: Analyzing trace with hash 897616263, now seen corresponding path program 1 times [2018-06-22 01:38:11,867 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:11,867 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:11,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:11,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:11,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:11,889 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:11,995 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 01:38:11,995 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:11,995 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:38:11,995 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:11,996 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:11,996 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:11,996 INFO ]: Start difference. First operand 21 states and 28 transitions. Second operand 4 states. [2018-06-22 01:38:12,018 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:12,018 INFO ]: Finished difference Result 19 states and 24 transitions. [2018-06-22 01:38:12,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:38:12,019 INFO ]: Start accepts. Automaton has 4 states. Word has length 15 [2018-06-22 01:38:12,019 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:12,019 INFO ]: With dead ends: 19 [2018-06-22 01:38:12,019 INFO ]: Without dead ends: 0 [2018-06-22 01:38:12,019 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:12,019 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:38:12,019 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:38:12,020 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:38:12,020 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:38:12,020 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-22 01:38:12,020 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:12,020 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:38:12,020 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:12,020 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:38:12,020 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:38:12,024 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:38:12 BoogieIcfgContainer [2018-06-22 01:38:12,024 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:38:12,025 INFO ]: Toolchain (without parser) took 1498.46 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 216.4 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:12,026 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:38:12,027 INFO ]: ChcToBoogie took 61.96 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:12,028 INFO ]: Boogie Preprocessor took 32.73 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:38:12,028 INFO ]: RCFGBuilder took 179.54 ms. Allocated memory is still 307.2 MB. Free memory was 260.6 MB in the beginning and 252.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:12,029 INFO ]: TraceAbstraction took 1213.95 ms. Allocated memory is still 307.2 MB. Free memory was 252.6 MB in the beginning and 216.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:12,037 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.96 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.73 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 179.54 ms. Allocated memory is still 307.2 MB. Free memory was 260.6 MB in the beginning and 252.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1213.95 ms. Allocated memory is still 307.2 MB. Free memory was 252.6 MB in the beginning and 216.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 25 SDslu, 70 SDs, 0 SdLazy, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive3-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-38-12-052.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive3-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-38-12-052.csv Received shutdown request...